waggishness

/ˈwæɡɪʃnəs/
noun
  1. The quality or state of being playful, mischievous, or fond of making jokes.
    • The teacher appreciated the student's waggishness in class, as long as it didn't disrupt the lesson.
    • Her waggishness came through in the playful way she decorated the office for April Fools' Day.
    • His waggishness made him the life of every party, always ready with a clever quip.